A very strong idea. Not only is the black bishop completely excluded from the game, but Praggnanandhaa gets access to a vital open file.
23... g7g4 White is clearly on top, but can he win this $2 24. e1c1 Excellent aggressive prophylaxis $1 24... f7f6 And a slip $1 25. c3c4 Now Black is facing serious problems. 25... f6f5 